Optical modulation study of repaired damage morphologies of fused silica by scalar diffraction theory

Wei Liao; Bo Li; Qingyan Zhou; Xiaolong Jiang; Yong Jiang; Haijun Wang; Xiaoyu Luan; Xia Xiang; Wanguo Zheng; Xiaodong Yuan

doi:10.1117/1.OE.56.1.016113

19 January 2017 Optical modulation study of repaired damage morphologies of fused silica by scalar diffraction theory

Wei Liao, Bo Li, Qingyan Zhou, Xiaolong Jiang, Yong Jiang, Haijun Wang, Xiaoyu Luan, Xia Xiang, Wanguo Zheng, Xiaodong Yuan

Author Affiliations +

Optical Engineering, Vol. 56, Issue 1, 016113 (January 2017). https://doi.org/10.1117/1.OE.56.1.016113

Abstract

The cone and Gaussian repaired damage craters are two typical morphologies induced by CO2 laser evaporation and nonevaporation technologies. The mathematical models are built for these two types of repaired craters, and the light modulation at 355 nm induced by the millimeter-scale repaired damage morphology is studied by scalar diffraction theory. The results show that the modulation of the Gaussian repaired morphology has one peak and then decreases with the increasing distance from 0 to 30 cm. While the modulation for cone repaired morphology remains stable after decreasing quickly with the increasing distance. When the horizontal radius increases, the modulation looks like a saw-tooth. However, the modulation has irregular variations for two kinds of morphologies with the increasing vertical depth. The simulated results agree well with experimental results. The horizontal and vertical dimensions, and downstream distance have different influences on the modulation. The risk of damage to downstream optical components can be suppressed to improve the stability of the optical system if the shape and size of repaired craters are well controlled and the positions of downstream optical components are selected appropriately.

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Wei Liao, Bo Li, Qingyan Zhou, Xiaolong Jiang, Yong Jiang, Haijun Wang, Xiaoyu Luan, Xia Xiang, Wanguo Zheng, and Xiaodong Yuan "Optical modulation study of repaired damage morphologies of fused silica by scalar diffraction theory," Optical Engineering 56(1), 016113 (19 January 2017). https://doi.org/10.1117/1.OE.56.1.016113

Received: 23 September 2016; Accepted: 27 December 2016; Published: 19 January 2017

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